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1.本单元重、难点分析圆锥曲线是高中数学的主体内容之一,充分体现了以代数中数与式为基础来研究几何问题的基本思想,是曲线与方程概念的进一步深化.本单元的重点:椭圆、双曲线、抛物线的定义、标准方程和几何性质,坐标法,直线与圆锥曲线的位置关系.本单元的难点:由曲线求方程
1. The unit’s heavy and difficult analysis The conic section is one of the main contents of high school mathematics. It fully embodies the basic idea of studying geometric problems based on algebraic numbers and formulae. It is the further deepening of the concepts of curves and equations. Emphasis: Definition of ellipse, hyperbola, parabola, standard equations and geometric properties, coordinate method, positional relationship between straight line and conic section. Difficulties in this unit: Find equations from curves